I was checking out some of the coverage in other blogs, when I saw this comment on the Engadget post.
Sam Gigliotti @ Mar 7th 2007 2:04PMI am the lead engineer on the Unbox team. It’s great to see all this interest in the TiVo launch.
We’re working on getting HD content for the Series 3, as well as cleaning up the 4:3 vs 16:9 issue. It just takes time to re-encode thousands of video files and get them uploaded to our CDN. You will see this situation improve in the near future.
I think this is the first (pseudo-)confirmation that 16:9 and HD content is coming to the service.